Device for regulating the recoil and counter-recoil of guns.



PATENTBD APB. 2s,'-19o 3.

. y HA'US'SNERQ. DEVICE FOR REGULATING THEIREGOILAND COUNTER REGOIL 0F GUN8..

APPLICATION FILED NOV. 15 1901..

N0 MODEL.

M M M .1 rrn FFICE.

DEVICE FOR REGULATING THE RECOIL AND COUNTER-RECOIL'OF GUNS.

SPECIFICATION forming part of vLetters Patent No. 726,531, dated April28, 1908.

Application tiled November 15,1901. Serial No. 82,353. (No model.)

To all whom it may concern:

Be it known that I, KONRAD HAUSSNER, of No. 7 Alexanderstrasse, in the city of Eisenach, in theProvince of Th u ringia and Empire of Germany, have invented certain new and useful'lmprovements in Devices for Regulating the Recoil andOounter-Recoil of Guns,

of which the following is a specification.

Thisinvention relates to improvements in devices for regulating and controlling the forward movement of liquid brakes for ordnance, and has for its object to render possi-' ble upon the forward movement'of the gun a regulation of the, section of the liquid-passage from outside without further packing than that of the single piston-rod being required. The improved device is illustrated in the accompanying drawings, in which- Figure 1 shows a vertical section through the brake cylinder. Fig. 2 isa transverse section on the line A B of Fig. 1, while Fig. 3

to travel in spiral grooves 7c of the said cylinder in the direction of the arrow E. As soon as the recoil takes place, the piston rod, with the two piston-disks, will be actuated in the direction of the arrow G. Accordingly, as. hereinbefore indicated, the projections h of the disk H will cause the latter to travel ina straight line. The disk I, however, in accord ance with the spiral grooves is will carry out a spiral movement in the direction of the arrow G. The channel 2', forming the passage for the brake fluid through the disk I, in conjunction with thehole h of the disk H, forming the passage for the brake fluid through.

the disk H will thus, as is apparent in consequence of the beforesaid spiral movement,

constantly present a changing section to the flow of the glycerin during the saidreeoil. -Upon the opposite side ofthe piston-roda valve L is arranged provided with a pi'ojec-.

tion Z, adapted to slide in a groove n upon the guide-piece N, whereby a to-and-fro movement of the valve is attained. The guidepiece N, however, being rigidly connected to the piston-rod by screw-thread and a cotter pin, it is clear that the said valve L cannot turn relatively to the piston-rod.

The spring M, Fig. 1, serves to lightly press the valve L against the disk 11.

During the recoil of the gun in the direc-Q tion'of the arrow G the liquid flowing from the front to the rear side'of the piston will only lift the valve L to such extent as-is necessary to permit the flow through the same. 65

When the gun, however, in consequence of the action of an accumulator, moves forward on counter-recoil and the piston-rod and piston-disk connected thereto reverse their di-- rection of movement, so that they now move in the direction of the arrow F, then in consequence of the pressure of the spring M or in the absence of this by the action solely of the pressure of the liquid, the valve L will then be caused to bear upon the rear pistondi'sk H. In its position at this moment it will be apparent that the said valve L will only leave for the entire path of the forward movement of the'gun a very small and definite sec tion of passage 0 open for the flow of the liquid. (See Fig. 3.) This section of passage 0, I

as also readily apparent, can, however, be. increased or diminished to an optional degree by turning the piston-rod from the outside, as

upon the turning of the latter the guide-piece.

N, rigidly connected to same, as herein'before described, will move with the piston-rod, and as a consequence also the valve-L, owing to the engagement of the nose or projection Z;

with the groove n. On the outside, the piston-rod itself can be securely held in any position against movement relati'vely to the brake-cylinder by means of a Safe y device of optional form. Thissimple regulation or adjustment withont'any. further packing is, however, of the greatest value,..-as it is a well-known fact that a liquid'such.as glyc- Y erin contracts when subjected to cold, and thus in consequence of the high/specificloo.-

gravity produces a greater resistance in. the

flow of theliquid. For this reason it is de sirable' to employ for the forward: movement of the gun a greater section of passage for the flow of the liquid in order thatthe accuand of important service to have the means at disposal .to increase the said section in the manner hereinbefore described.

What I claim, and desire to protect by Letters Patent of the United States, is

- 1. In a device of the character described,

Y the combination with a piston-cylinder, a piston-rod and a-pis LOH rotatably mounted therei on, said piston comprising two disks provided with openings, of a longitudinally-movable 1 valve controlling the passage of fluid through the openingsin one of the disks, and means for efiecting the turning of the disks on the piston-rod upon the recoil of the gun and simultaneonsly'the turningof one of the disks relatively-to the other for they purpose specified. a g

2. In ad'eviceof' the'character described, the combination with a piston-cylinder, of a piston-rod and a piston rotatably mounted gaging longitudinal grooves in the cylinder 3 and a longitudinally-movable valve arranged to control the passage of fiuid through the openings in one of the disks, substantially as specified.

3. In a device of the character described,

the combination with a cylinder, of a pistonrod, a piston rotatably mounted on the rod and comprising two disks provided with openings, means for efiecting the turning of the disks on the piston-rod upon the recoil of the gun, and sirnnltaneously'turning one of the disks relatively to the other, a guide secured upon the piston-rod and provided with a groove, a valve mounted {or longitudinal movement in the guide and provided with a projection engaging the groove in said guide and a spring arranged to bear upon the valve, all as specified.

'In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

' KONRAD HAUSSNER.

\Vitnesses .ADALBERT LAZAR, MAX ZARNSWITZ. 

